My plans are to explore collaboration in writing latter this term or next, but I did get a little taster for it this week. Our goal for a task was to use a variety of sentence lengths (they tend to write a lot of short sentences) and I let the kids do this in pairs. I asked them to come up with three sentences to make a paragraph. They also had to do this verbally as apposed to writing it all down, which they did do latter in the lesson.
We haven't done it for while and the kids seemed to really enjoy it. Their was some great conversation going on as they worked together to create what they thought was a good paragraph. I then asked them to share their paragraph to another group and allowed the other group to be critical. The result of this was more good debate and collaboration which culminated in paragraphs that had a variety of sentence lengths.
I wonder how this would work for a whole piece of writing for something like a narrative? I'll give them a chance to this for sure.